The Killers and Imagine Dragons will headline a benefit concert for Oct. 1 shooting victims. "The Vegas Strong Benefit Concert" will be Dec. 1 at T-Mobile Arena. Boyz II Men, David Copperfield, Cirque du Soleil performers and Penn & Teller will also perform. The show began to take shape just days following the Oct. 1 shooting. The benefit will mark the first time The Killers and Imagine Dragons will play in the same single-show lineup. Tickets range from $75-$125 and proceeds will go to the Las Vegas Victims Fund.